11451511045540 has 96 divisors (see below), whose sum is σ = 25342397982720. Its totient is φ = 4334631947136.

The previous prime is 11451511045493. The next prime is 11451511045577. The reversal of 11451511045540 is 4554011515411.

It is a super-2 number, since 2×11451511045540² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11451511045540.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2058510799 + ... + 2058516361.

It is an arithmetic number, because the mean of its divisors is an integer number (263983312320).

Almost surely, 2^{11451511045540} is an apocalyptic number.

11451511045540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11451511045540 is an abundant number, since it is smaller than the sum of its proper divisors (13890886937180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11451511045540 is a wasteful number, since it uses less digits than its factorization.

11451511045540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10721 (or 10719 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 37.

The spelling of 11451511045540 in words is "eleven trillion, four hundred fifty-one billion, five hundred eleven million, forty-five thousand, five hundred forty".